CH233502A - Process for the production of polyvinyl chloride which is soluble in hot dioxane but insoluble in cold. - Google Patents

Process for the production of polyvinyl chloride which is soluble in hot dioxane but insoluble in cold.

Info

Publication number
CH233502A
CH233502A CH233502DA CH233502A CH 233502 A CH233502 A CH 233502A CH 233502D A CH233502D A CH 233502DA CH 233502 A CH233502 A CH 233502A
Authority
CH
Switzerland
Prior art keywords
insoluble
soluble
cold
polyvinyl chloride
production
Prior art date
Application number
Other languages
German (de)
Inventor
Alexander Wacker Gesellsc Gmbh
Original Assignee
Wacker Chemie Gmbh
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wacker Chemie Gmbh filed Critical Wacker Chemie Gmbh
Publication of CH233502A publication Critical patent/CH233502A/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F214/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen
    • C08F214/02—Monomers containing chlorine
    • C08F214/04—Monomers containing two carbon atoms
    • C08F214/06—Vinyl chloride
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F18/00—Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an acyloxy radical of a saturated carboxylic acid, of carbonic acid or of a haloformic acid
    • C08F18/02—Esters of monocarboxylic acids
    • C08F18/04—Vinyl esters
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F18/00—Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an acyloxy radical of a saturated carboxylic acid, of carbonic acid or of a haloformic acid
    • C08F18/02—Esters of monocarboxylic acids
    • C08F18/04—Vinyl esters
    • C08F18/08—Vinyl acetate
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F2/00—Processes of polymerisation
    • C08F2/04—Polymerisation in solution
    • C08F2/06—Organic solvent
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F36/00—Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds
    • C08F36/02—Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds
    • C08F36/20—Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds unconjugated

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Polymerisation Methods In General (AREA)

Description

  

  Verfahren zur Herstellung von in heissem     Diogan    löslichem, in kaltem aber unlöslichem       Polyvinylehlorid.       Es wurde gefunden, dass man durch Zu  gabe von     Vinylcrotonat    bei der     Polymerisa-          tion    von     Vinylchlorid    ein     Polymerisat    er  halten kann, das zwar in kaltem     Dioxan     unlöslich, in heissem aber löslich ist.

   Es     ge-          lingt,diesdadurch,    dass man nur einen Bruch  teil der     Vinylcrötonatmen,ge    anwendet, die  unter sonst     ;gleichen        Polymerisationsbedin-          gungen    ein in kochendem     Diogan    unlösliches       Polyvinylchlori,d    ergibt. Bei den meisten       Polymerisation@sbedingungen    gelangt man  mit     Vinylcrotonatmengen    zum Ziel, die  wenige Promille, berechnet auf das ange  wandte     Vinylchlorid,    betragen.  



  Die technische Bedeutung dieser Arbeits  weise liegt. darin,     dass    sie zu einem     Polyvinyl-          chlorid    führt, das noch     verhältnismässig     leicht     verarbeitbar,    trotzdem aber schon in  hohem Masse gegen fast alle technisch in  Frage kommenden organischen Flüssigkeiten  beständig und zugleich dem ohne     Vinylcro-          to.nat        herstellbaren        Polyvinylchlorid    in seinen  mechanischen Eigenschaften Überlegen ist.



  Process for the production of polyvinyl chloride which is soluble in hot Diogan but insoluble in cold. It has been found that by adding vinyl crotonate in the polymerization of vinyl chloride, a polymer can be obtained which is insoluble in cold dioxane but soluble in hot dioxane.

   This is achieved by using only a fraction of the vinyl cronon breath, which under otherwise identical polymerization conditions results in polyvinylchloride, which is insoluble in boiling Diogan. In most polymerization conditions, the goal is achieved with amounts of vinyl crotonate that are a few per thousand, calculated on the vinyl chloride used.



  The technical importance of this way of working is. in the fact that it leads to a polyvinyl chloride that is still relatively easy to process, but is nevertheless highly resistant to almost all technically possible organic liquids and at the same time is superior to polyvinyl chloride that can be produced without vinyl crotonate in terms of its mechanical properties .

Claims (1)

PATENTANSPRUCH: Verfahren- zur Herstellung von in heissem Dioxan löslichem, in kaltem .aber unlöslichem Polyvinylehlori@d,dadurch ,gekennzeichnet, dass man die Polymerisation in Gegenwart einer solchen geringen Menge von Vinylcroto- nat vor sich gehen lässt, welche nur einen Bruchteil der unter sonst gleichen Polymeri- sationsbedingungen zu in kochendem Diogan unlöslichem Polyvinylchlorid führenden Menge beträgt. PATENT CLAIM: Process for the production of polyvinylehlori @ d which is soluble in hot dioxane but insoluble in cold, but is characterized in that the polymerization is allowed to proceed in the presence of such a small amount of vinylcrotonate which is only a fraction of the amount below otherwise the same polymerization conditions as the amount leading to polyvinyl chloride which is insoluble in boiling Diogan. UNTERANSPRUCH: Verfahren nach Patentanspruch, dadurch gekennzeichnet, dass das Vinylcrotonat in Mengen von wenigen Promille, berechnet auf das angewandte Vinylchlorid, verwendet wird. SUBCLAIM: Method according to claim, characterized in that the vinyl crotonate is used in amounts of a few per thousand, calculated on the vinyl chloride used.
CH233502D 1940-01-05 1941-01-03 Process for the production of polyvinyl chloride which is soluble in hot dioxane but insoluble in cold. CH233502A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE233502X 1940-01-05
DE226694X 1940-01-05
CH226694T 1941-01-03

Publications (1)

Publication Number Publication Date
CH233502A true CH233502A (en) 1944-07-31

Family

ID=61628528

Family Applications (4)

Application Number Title Priority Date Filing Date
CH233501D CH233501A (en) 1940-01-05 1941-01-03 Process for the production of polyvinyl acetate, which is soluble in alcohol, acetone and benzene and has a high melting point.
CH233502D CH233502A (en) 1940-01-05 1941-01-03 Process for the production of polyvinyl chloride which is soluble in hot dioxane but insoluble in cold.
CH226694D CH226694A (en) 1940-01-05 1941-01-03 Process for the polymerization of vinyl acetate.
CH295895D CH295895A (en) 1940-01-05 1944-05-27 Process for the production of a copolymer.

Family Applications Before (1)

Application Number Title Priority Date Filing Date
CH233501D CH233501A (en) 1940-01-05 1941-01-03 Process for the production of polyvinyl acetate, which is soluble in alcohol, acetone and benzene and has a high melting point.

Family Applications After (2)

Application Number Title Priority Date Filing Date
CH226694D CH226694A (en) 1940-01-05 1941-01-03 Process for the polymerization of vinyl acetate.
CH295895D CH295895A (en) 1940-01-05 1944-05-27 Process for the production of a copolymer.

Country Status (4)

Country Link
BE (2) BE440208A (en)
CH (4) CH233501A (en)
DE (2) DE874214C (en)
FR (2) FR881719A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3005809A (en) * 1957-09-05 1961-10-24 Air Reduction Vinyl alcohol-crotonic acid copolymers

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB496276A (en) * 1937-05-27 1938-11-28 Ig Farbenindustrie Ag Manufacture of artificial substances resembling rubber

Also Published As

Publication number Publication date
CH233501A (en) 1944-07-31
BE455982A (en) 1944-06-30
DE874214C (en) 1953-04-20
DE881260C (en) 1953-06-29
CH295895A (en) 1954-01-15
BE440208A (en) 1941-02-28
CH226694A (en) 1943-04-30
FR881719A (en) 1943-05-06
FR53726E (en) 1946-07-29

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